Inferential Statistics
Inferential statistics involves using data from a sample to infer details about a population. These guides will give you the tools you need to interpret your data and gain insight into what it all means.

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What 'Fail to Reject' Means in a Hypothesis Test

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Degrees of Freedom in Statistics and Mathematics

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Parametric and Nonparametric Methods in Statistics

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Type I and Type II Errors in Statistics

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What Is the Difference Between Alpha and PValues?

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Examples of Confidence Intervals for Means

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Explore Maximum Likelihood Estimation Examples

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Degrees of Freedom for Independence of Variables in TwoWay Table

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Example of an ANOVA Calculation

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How Large of a Sample Size Do Is Needed for a Certain Margin of Error?

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An Example of a Hypothesis Test

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Calculate a Confidence Interval for a Mean When You Know Sigma

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How to Find Critical Values with a ChiSquare Table

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An Example of ChiSquare Test for a Multinomial Experiment

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Example of Confidence Interval for a Population Variance

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How to Find Degrees of Freedom in Statistics

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The Difference Between Type I and Type II Errors in Hypothesis Testing

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Confidence Interval for the Difference of Two Population Proportions

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The Runs Test for Random Sequences

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What Is ANOVA?

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How to Calculate the Margin of Error

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Example of a Permutation Test

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The Use of Confidence Intervals in Inferential Statistics

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Confidence Intervals: 4 Common Mistakes

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Calculating a Confidence Interval for a Mean

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Plus Four Confidence Intervals

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What Is a Sampling Distribution